Baomain 10 Pcs 5mm Male Thread 4mm Push In Joint Pneumatic Connector Quick Fittings Item Name : Quick Fittings;Model : JPC4-M5 Material : Metal, Plastic;Color : Silver Tone, Black Thread Diameter : 5mm;Inner Diameter(Black End) : 4mm Total Size(Each) : 21.5 x 11.2mm/ 0.8" x 0.4" (L*W);Weight : 51g Package Content : 10 x Quick Fittings